Major health insurers in some states are seeking increases as high as 30% or more for premiums on 2018 Affordable Care Act plans, according to new federal data that provide the broadest view so far of the turmoil across exchanges as companies try to anticipate Trump administration policies.

Big insurers in Idaho, West Virginia, South Carolina, Iowa and Wyoming are seeking to raise premiums by averages close to 30% or more, according to preliminary rate requests published Tuesday by the U.S. Department of Health and Human Services. Major marketplace players in New Mexico, Tennessee, North Dakota and Hawaii indicated they were looking for average increases of 20% or more.